Re: [Chrysler300] Hurst running poorly - UPDATE

[Robert Merritt <okbobwynmer@xxxxxxxxx>]

Excellent advice; the only thing I might add is to disconnect the line from the tank at the fuel pump while you have it loose at the tank end and blow it out to clear any crud in the line and put a new in-line filter between the fuel pump and carb.
One more thing; there are two flapper valves in the fuel pump, an inlet and an outlet. It's possible the reason you aren't getting any suction is because of crud lodged in one or both. I have an electric fuel pump and enough hose to hook it to the fuel pump on the car and push fresh, clean gas thru the inlet side with a hose from the outlet side into a clear container so I can see when the pump is clean. The gas will flow thru the pump valves in the direction gas normally flows, and flush any contamination out. The carb should be ok because of the filter, so now you have a clean system from tank to carb. Before you hook the line to carb up, first hook up the line from the tank, and crank the engine over while the line from the outlet side of the fuel pump still has the hose running into the clear container to make sure you now have strong pulse of gas, then hook the line to carb and you should be good to go.
Okie Bob

GERALD OLSON <olson77@xxxxxxxxxxxxx> wrote:
Stephen, A couple of things come to mind. If your fuel
pump push rod has worn by an 1/8" or so (and they do
ware) You won't ever get enough gas. That little rod
left a good friend and club member sitting with his
Silver Edition DEAD on top of the Detroit- Windsor
Ambassador Bridge a few years back. I think the $6 or
$8 investment with Mother Mopar would be good
insurance. I would also look at the draw tube filter
at the end of your sending unit. That one is more of a
pain because you have to drop the tank to get at it.
If you do this, I'd have the tank flushed and boiled
out while you have it down. In my experience, the fuel
line is only the transporter of the crud coming out of
the gas tank. The lines themselves are pretty bullet
proof. And that way you'd be starting over with a
clean tank and all fresh fuel. We're all staying
tuned, Jerry

--- stephen schieser <sjschry70@xxxxxxxxx> wrote:

> Thanks to everyone who responded to my e-mail about
> my 300 Hurst - many very good ideas and suggestions!
> After reading all of your notes, I looked down the
> carb and the accelerator pump was not squirting much
> gas when you opened the throttle. I disconnected the
> fuel line at the carb, ran a fuel line from there
> into a glass jar. I cranked the engine with the
> ignition off, and there was not much flow of gas
> into the jar. I disconnected the fuel line at the
> gas tank to confirm gas was getting to the fuel line
> from the tank ( my gas gauge quit working a number
> of years ago and I have not repaired it yet.) I
> connected a piece of fuel line to the fuel line just
> forward of the tank and ran this to a jar of fresh
> gas. I then pulled off the fuel line from the fuel
> pump to the fuel filter ( just below the alternator
> ). A lot of rusty, grainy, dirty gas drained out of
> this short fuel line. There must be a lot of rust in
> the long fuel line from the tank to the engine, or
> rust in the gas tank?
>  With the ignition off, I cranked the engine, to see
> if the fuel pump would pull gas from the jar of
> fresh gas back near the tank, through the pump and
> then into a glass jar at the discharge of the fuel
> pump. I got very little fuel flow. I then hooked a
> fuel line from the jar of fresh gas to the suction
> side of the pump ( to bypass the long under car fuel
> line ). Cranked the engine again and got no fuel
> flow. I hooked a vacuum gauge to the suction side of
> the fuel pump and cranked the engine - got no vacuum
> reading. I suspect the fuel filter is plugged up and
> the new fuel pump I put on 2 years ago is not
> pumping? Maybe the rust and dirt in the line ruined
> the new fuel pump? Should you get a vacuum reading
> at the suction side of the fuel pump when you crank
> the engine? I would think so?
>  
> Tomorrow I may try to gravity feed the carb and see
> how the car runs. I likely also will pull off the
> fuel pump and see if there is anything wrong with
> it? I will also replace the fuel filter above the
> fuel pump, once I get the fuel pump to pump some
> gas. Any suggestions or ideas based on the above
> note will be greatly appreciated! 
> 
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